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+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+
+<glsa id="200608-12">
+ <title>x11vnc: Authentication bypass in included LibVNCServer code</title>
+ <synopsis>
+ VNC servers created with x11vnc accept insecure protocol types, even when
+ the server does not offer it, resulting in the possibility of unauthorized
+ access to the server.
+ </synopsis>
+ <product type="ebuild">x11vnc</product>
+ <announced>August 07, 2006</announced>
+ <revised>August 07, 2006: 01</revised>
+ <bug>142559</bug>
+ <access>remote</access>
+ <affected>
+ <package name="x11-misc/x11vnc" auto="yes" arch="*">
+ <unaffected range="ge">0.8.1</unaffected>
+ <vulnerable range="lt">0.8.1</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ x11vnc provides VNC servers for X displays.
+ </p>
+ </background>
+ <description>
+ <p>
+ x11vnc includes vulnerable LibVNCServer code, which fails to properly
+ validate protocol types effectively letting users decide what protocol
+ to use, such as "Type 1 - None" (GLSA-200608-05). x11vnc will accept
+ this security type, even if it is not offered by the server.
+ </p>
+ </description>
+ <impact type="high">
+ <p>
+ An attacker could exploit this vulnerability to gain unauthorized
+ access with the privileges of the user running the VNC server.
+ </p>
+ </impact>
+ <workaround>
+ <p>
+ There is no known workaround at this time.
+ </p>
+ </workaround>
+ <resolution>
+ <p>
+ All x11vnc users should upgrade to the latest version:
+ </p>
+ <code>
+ # emerge --sync
+ # emerge --ask --oneshot --verbose &quot;&gt;=x11-misc/x11vnc-0.8.1&quot;</code>
+ </resolution>
+ <references>
+ <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450">CVE-2006-2450</uri>
+ <uri link="/security/en/glsa/glsa-200608-05.xml">GLSA-200608-05</uri>
+ </references>
+ <metadata tag="requester" timestamp="Sat, 05 Aug 2006 07:18:47 +0000">
+ jaervosz
+ </metadata>
+ <metadata tag="bugReady" timestamp="Sat, 05 Aug 2006 16:44:29 +0000">
+ koon
+ </metadata>
+ <metadata tag="submitter" timestamp="Sat, 05 Aug 2006 17:17:11 +0000">
+ falco
+ </metadata>
+</glsa>